sample.cpp

#include <iostream>
#include <thread>
#include <chrono>

using namespace std;

void sleep_fn() {
    while(true) {
        this_thread::sleep_for(1000ms);
    }
}

constexpr int threads_count = 100;

int main()
{
    array<thread, threads_count> threads;
    for (int i = 0; i < threads_count; i++)
        threads[i] = thread(sleep_fn);

    chrono::steady_clock::time_point begin = chrono::steady_clock::now();
    chrono::steady_clock::time_point end;
    for (int i = 0; i < 50; i++)
        end = chrono::steady_clock::now();

    cout << "Time difference = " << chrono::duration_cast<chrono::milliseconds>(end - begin).count() << "[ms]" << endl;

    for (int i = 0; i < threads_count; i++)
        threads[i].detach();
}